Marin Atanasov

Provides the theme and plugin developers an easy way to build and implement highly customizable breadcrumb functionality, specifically tailored to their needs. 
Supports a lot of filters and hooks, and is written in OOP style, giving developers full control over the breadcrumb trail items and appearance. 
This plugin can also be embedded in themes, instead of installing it as a WordPress plugin.
<h3>Configuration</h3>
The most basic way to insert Carbon Breadcrumbs in your theme code is:
<pre><code><?php Carbon_Breadcrumb_Trail::output(); ?>
</code></pre>
If you want to specify various breadcrumb rendering options, you can specify them in an array, like this:
<pre><code><?php
Carbon_Breadcrumb_Trail::output(array(
 'glue' => ' &gt; ', // glue between breadcrumb items
 'link_before' => '',
 'link_after' => '',
 'wrapper_before' => '',
 'wrapper_after' => '',
 'title_before' => '',
 'title_after' => '',
 'min_items' => 2,
 'last_item_link' => true,
 'display_home_item' => true,
 'home_item_title' => __('Home', 'carbon_breadcrumbs'),
 'renderer' => 'Carbon_Breadcrumb_Trail_Renderer',
));
?>
</code></pre>
For additional configuration and developer documentation, you can visit the Github repository:
https://github.com/tyxla/carbon-breadcrumbs
<h3>Ideas and bug reports</h3>
Any ideas for new modules or any other additional functionality that users would benefit from are welcome.
If you have an idea for a new feature, or you want to report a bug, feel free to do it here in the Support tab, or you can do it at the Github repository of the project:
https://github.com/tyxla/carbon-breadcrumbs

Carbon Breadcrumbs

This remains the best breadcrumbs plugin I've used. In addition to its rich customization options, it provides developers with various easy ways to extend it.



The best breadcrumbs plugin I've used

This plugin has saved me quite some time.
Thanks to the numerous filters, you can adjust everything.
Respect <3

Very customizable

GREAT plugin, fantastic codebase: super clean & TESTED?! FTW!

Only downside is no schematagging out of the box :/. This is a pivotal SEO feature and I think this would greatly boost interest in your plugin.

Info: https://developers.google.com/search/docs/data-types/breadcrumbs#guidelines

Result should look like:

<ol itemscope itemtype="http://schema.org/BreadcrumbList">
 <li itemprop="itemListElement" itemscope
 itemtype="http://schema.org/ListItem">
 <a itemscope itemtype="http://schema.org/WebPage"
 itemprop="item" href="link.html">
 Crumb 1
 </a>
 <meta itemprop="position" content="1" />
/
 </li>
 <li itemprop="itemListElement" itemscope
 itemtype="http://schema.org/ListItem">
 <a itemscope itemtype="http://schema.org/WebPage"
 itemprop="item" href="link2.html">
 Crumb 2
 </a>
 <meta itemprop="position" content="2" />
 </li>
</ol>



Here's how I've shimmed it in:


<?php
 $breadcrumbs = new Carbon_Breadcrumb_Trail(array(
 'glue' => ' / ',
 'link_before' => '<li itemprop="itemListElement" itemscope itemtype="http://schema.org/ListItem">',
 'link_after' => '</li>',
 'wrapper_before' => '<ol class="breadcrumbs" itemscope itemtype="http://schema.org/BreadcrumbList">',
 'wrapper_after' => '</ol>',
 'title_before' => '',
 'title_after' => '',
 ));

 $breadcrumbs->setup();
 echo $breadcrumbs->render(true); // WP_KSES strips itemprop, itemscope, etc, so bypassing!!!

 add_filter('carbon_breadcrumbs_item_attributes', _'breadcrumb_schematags', 10, 2);
 function breadcrumb_schematags($attributes, $item) {
 if (!is_array($attributes)) $attributes = array();
 $attributes['itemscope'] = null;
 $attributes['itemtype'] = 'http://schema.org/WebPage';
 $attributes['itemprop'] = 'item';
 return $attributes;
 }
 add_filter('carbon_breadcrumbs_item_output', 'breadcrumb_item_position', 10, 5);
 function breadcrumb_item_position($item_output, $item, $trail, $trail_renderer, $index){
 // Add Position
 $n = strrpos($item_output, '</li>');
 $item_output = substr($item_output, 0, $n) . '<meta itemprop="position" content="'. $index .'" />' . substr($item_output, $n);
 return $item_output;
 }

Really wonderful, well-thought code. wish there were schematags

A basic WordPress plugin for breadcrumbs with advanced capabilities for extending.

bioscore

The Bioscore Dashboard Pro plugin provides a seamless, secure, dark-mode administrative interface to integrate your WordPress website with your Bioscore account. Instead of manually editing your theme files or relying on custom code snippets, this plugin handles the entire process automatically and securely:
Secure Authentication: Log in using your Bioscore credentials or API token. Credentials are saved encrypted. 
Automatic Script Injection: reliably injects the necessary Bioscore optimization and tracking scripts directly into your site’s section on all pages (using the wp_head hook with high priority). 
Connection Management: Provides a central toggle to instantly enable or disable script injection without deleting any settings. 
Verification Tool: Includes an integrated button to verify that the Bioscore scripts are successfully present in your site’s live front-end source code. 
Account Control: Easy access to your logged-in status and a secure Logout / Clear Credentials feature.
How It Works 
1. Install & Activate: Add the Bioscore plugin to your WordPress site and activate it. 
2. Login to Bioscore: Securely log in with your Bioscore account directly from your WordPress admin dashboard. 
3. Auto Domain Detection: The plugin automatically detects your WordPress domain and connects it to your Bioscore account. 
4. Automatic Header Setup: The required tracking headers are automatically added to your website, no coding or manual edits needed. 
5. Manage Headers Anytime: From your WordPress admin, you can review and manage the tracking headers added by Bioscore, ensuring full control and flexibility. 
6. Start Tracking: Once connected, your website’s speed, sustainability, and carbon data begin flowing into your Bioscore dashboard in real time.
<h3>Configuration</h3>
<ol>
<li>Go to Bioscore -> Integration Dashboard.</li>
<li>Navigate to the Authentication & Login tab.</li>
<li>Enter your Bioscore Email and Password or paste your API Token.</li>
<li>Click “Save Credentials & Login”. The plugin will fetch your site list and attempt to auto-connect.</li>
<li>Go to the Connection & Scripts tab.</li>
<li>Use the main toggle to ensure the connection is Scripts ENABLED (green badge).</li>
<li>Click “Verify Scripts Injection” to confirm the scripts are correctly appearing on your live website.</li>
</ol>
<h3>External Services</h3>
This plugin is the official connector for Bioscore.com and requires a connection to its external API to function. This is necessary to authenticate your account, manage your websites, and fetch the required optimization scripts.
<ul>
<li>Service: Bioscore API (https://bioscore.com/api/)</li>
<li>Data Sent: When you log in, your email and password (or API token) are sent to the Bioscore authentication endpoint to verify your account. When connecting a site, the current WordPress site URL is sent to associate it with your Bioscore profile.</li>
<li>Terms of Service: https://www.bioscore.com/terms</li>
<li>Privacy Policy: https://www.bioscore.com/privacy</li>
</ul>

Bioscore Dashboard Pro

Connect your WordPress site to Bioscore to measure and improve site speed and digital carbon footprint. Automatically adds required tracking scripts.

Carbon Breadcrumbs vs Bioscore Dashboard Pro